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參數資料
| 型號： | TDA4718A |
| 廠商： | SIEMENS A G |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS |
| 中文描述： | 0.07 A SWITCHING CONTROLLER, 100 kHz SWITCHING FREQ-MAX, PDIP18 |
| 文件頁數： | 3/21頁 |
| 文件大?。?/td> | 436K |
| 代理商： | TDA4718A |
TDA 4700
TDA 4718
Semiconductor Group
3
Pin Definitions and Functions (TDA 4700)
Pin
Symbol
Function
1
GND
Ground 0 V
2
3
+
V
REF
+
V
S
Reference voltage
Supply voltage
4
5
Q2
Q1
Output Q2
Output Q1
6
7
8
I SYM Q2
Q SYNC
C
soft start
Symmetry Q2
Sync. output
Soft start
9
10
11
R
T
C
filter
C
T
VCO
R
T
Capacitance
VCO
C
T
12
13
R
R
C
R
Ramp generator
R
R
Ramp generator
C
R
14
15
I COMP
Q Op Amp
Comparator input
Operational amplifier output
16
17
18
– I Op Amp
+ I Op Amp
I SYNC
Operational amplifier input (–)
Operational amplifier input (+)
Sync. input
19
ON/OFF/IUV
ON/OFF, undervoltage
20
21
QOV
IOV
Overvoltage output
Overvoltage input
22
23
–
I
DYN
+
I
DYN
Dynamic current limitation (–)
Dynamic current limitation (+)
24
I SYM Q1
Symmetry
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